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10 de dic. de 2022 · Relative to photo-oxidation, biodegradation is much slower and is not thought to remove plastics from the environment in a readily observable timescale. Solar UV radiation is thus the primary factor that drives generation of MP fragments.
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1. Introduction. The first reports of plastics litter in the...
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Aquí nos gustaría mostrarte una descripción, pero el sitio...
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UV radiation causes photooxidative aging, which results in...
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UV-radiation and oxygen are the most important factors that initiate degrdn. of polymers with a carbon-carbon backbone, leading to chain scission. Smaller polymer fragments formed by chain scission are more susceptible to biodegrdn. and therefore abiotic degrdn. is expected to precede biodegrdn.
23 de ago. de 2013 · Exposure to ultraviolet (UV) radiation may cause significant degradation of many materials. UV radiation causes photooxidative degradation which results in breaking of the polymer chains, produces radicals and reduces the molecular weight, causing deterioration of mechanical properties and leading to useless materials, after an ...
1 de abr. de 2021 · UV radiation is mainly responsible for the initiation of degradation. Many advanced technologies have been developed to characterize the degradation of plastics. Degradation causes oxidation and chain-scission of plastic polymers, forming low molecular weight degradation products and causing changs in physicochemical and mechanical ...
Fotodegradación. Bolsa de plástico fotodegradada junto a una ruta de excursiones. El efecto del sol la ha descompuesto en aproximadamente 2 000 trocitos de 1 a 25 mm después de 3 meses al aire libre. La fotodegradación es la alteración de materiales por efecto de la luz.
In polymer chemistry photo-oxidation (sometimes: oxidative photodegradation) is the degradation of a polymer surface due to the combined action of light and oxygen. [1] It is the most significant factor in the weathering of plastics. [2]
